The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 07, 2009

Filed:

Dec. 12, 2006
Applicant:

Hidetoshi Saito, Yamato, JP;

Inventor:

Hidetoshi Saito, Yamato, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 8/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A device includes first and second memory cell arrays, first and second decoders, first and second sense amplifiers, and first and second switch circuits. The first switch circuit switches the supply of writing and erasing voltages or a reading voltage to the first memory cell array, and switches the supply of writing and erasing addresses or a reading address to the first decoder, and switches the connection of a data line connected to the first memory cell array to the first sense amplifier. The second switch circuit switches the supply of writing and easing voltages or a reading voltage to one of the second memory cell arrays, and switches the supply of writing and erasing addresses or a reading address to one of the second decoders, and switches the connection of a data line connected to the second memory cell arrays to the second sense amplifier.


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